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厌氧活性污泥处理废水中的U(Ⅵ)

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苑士超, 谢水波, 李仕友, 刘金香, 刘迎九, 唐振平. 厌氧活性污泥处理废水中的U(Ⅵ)[J]. 环境工程学报, 2013, 7(6): 2081-2086.
引用本文: 苑士超, 谢水波, 李仕友, 刘金香, 刘迎九, 唐振平. 厌氧活性污泥处理废水中的U(Ⅵ)[J]. 环境工程学报, 2013, 7(6): 2081-2086.
shu
Yuan Shichao, Xie Shuibo, Li Shiyou, Liu Jinxiang, Liu Yingjiu, Tang Zhenping. U(Ⅵ) removal from wastewater by anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2081-2086.
Citation: Yuan Shichao, Xie Shuibo, Li Shiyou, Liu Jinxiang, Liu Yingjiu, Tang Zhenping. U(Ⅵ) removal from wastewater by anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2081-2086.
shu

厌氧活性污泥处理废水中的U(Ⅵ)

  • 1.

    南华大学污染控制与资源化技术湖南省重点实验室, 衡阳 421001

  • 2.

    南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001

  • 基金项目:

    国家自然科学基金资助项目(11175081)

    湖南省科技计划重点项目(2011SK2015)

    湖南省创新平台基金项目(09K076)

  • 中图分类号: X522

U(Ⅵ) removal from wastewater by anaerobic sludge

  • 1.

    Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China

  • 2.

    Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China

  • Fund Project:

  • 摘要: 用人工驯养的厌氧污泥进行除铀实验,探讨了微生物投加量(VSS)、pH值、U(Ⅵ)初始浓度、外加电子供体和污泥重复利用等对污泥处理U(Ⅵ)的影响,并进行了相关机理分析。实验结果表明,在适当的pH范围内(5.2~6.6),厌氧污泥对铀保持较长时间的高效去除率;当以还原铁粉和无水乙醇作电子供体时,U(Ⅵ)去除率保持在95%以上的时间为未加电子供体时的2倍。U(Ⅵ)去除速度与VSS投加量成正比关系,U(Ⅵ)初始浓度对去除效果的影响不大,厌氧污泥可以长期使用。pH值的影响最关键,其次是外加电子供体。厌氧污泥除U(Ⅵ)机理为氧化还原和吸附的共同作用。
    Abstract: This paper focused on the bioremediation ability of anaerobic sludge which artificially domesticated. The affecting factors such as different VSS dosages, pH, U(Ⅵ) initial concentration, addition of electron donors, reuse of anaerobic sludge were studied by batch experiments and the mechanisms for U(Ⅵ) removal were discussed. The results showed that pH is one of the key factors which influenced the experiment. High U(Ⅵ) removal rate could be reached only under proper pH(5.2~6.6). Batch experiment which added zero-valent iron or ethanol as electron donors showed 2 times longer time lasted with high U(Ⅵ) removal ratio of 95%. The speed of U(VI) removal was in proportion to the VSS dosage. Different initial U(Ⅵ) concentrations have little influence on U(Ⅵ) removal rate. The anaerobic sludge can be reused and the mechanisms for U(Ⅵ) removal are redox and adsorption.
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  • [1] Wang J., Chen C. Biosorption of heavy metals by Saccharomyces Cerevisiae: A Review. Biotechnol. Adv., 2006,24(5):427-451
    [2] Lovley D. R.,Phillips E. J. P.,Gorby Y. A.,et al. Microbial reduction of uranium. Nature, 1991,350(6317):413-416
    [3] Lovley D. R.,Phillips E. J. P. Bioremediation of uranium contamination with enzymatic uranium reduction. Environ.Sci.Technol., 1992,26 (11):2228-2234
    [4] Merroun M. L.,Selenska-Pobell S. Bacterial interactions with uranium: An environmental perspective. Contam. Hydrol., 2008,102(3):285-295
    [5] Wall J. D.,Krumholz L. R. Uranium reduction. Annual Review of Microbiol., 2006,60:149-166
    [6] Suzuki Y.,Suko T. Geomicrobiological factors that control uranium mobility in the environment: Update on recent advances in the bioremediation of uranium-contaminated sites. Mineral Petrol. Sci., 2006,101(6):299-307
    [7] Fernandez N.,Diaz E. E.,Amils R.,et al. Analysis of microbial community during biofilm development in an anaerobic wastewater treatment reactor. Microbiol. Ecol.,2008,56(1):121-132
    [8] Gonzalez-Gil G.,Lens P. N. L.,Van-Aelst A.,et al. Cluster structure of anaerobic aggregates of an expanded granular sludge bed reactor. Appl. Environ. Microbiol., 2001,67(8):3683-3692
    [9] Tapia-Rodriguez A.,Luna-Velasco A.,Field J. A.,et al. Anaerobic bioremediation of hexavalent uranium in groundwater by reductive precipitation with methanogenic granular sludge. Water Research, 2010,44(7):2153-2162
    [10] Nancharaiah Y. V.,Joshi H. M.,Mohan T. K. V.,et al. Aerobic granular biomass: A novel biomaterial for efficient uranium removal. Current Science,2006,91(4):503-509
    [11] 夏良树,王孟,邓昌爱,等. 榕树叶-活性污泥协同曝气处理含铀废水. 核化学与放射化学, 2006,28(4):231-235 Xia Liangshu, Wang Meng, Deng Changai, et al. Synergistic aeration biosorption of uranium containing wastewater by banyan leaves activated sludge. Journal of Nuclear and Radiochemistry, 2006,28(4):231-235
    [12] Goncalves M. M. M.,Goncalves A. C. A.,Leite S. G. F.,et al. Heavy metal removal from synthetic wastewaters in an anaerobic bioreactor using stillage from ethanol distilleries as a carbon source. Chemosphere, 2007,69(11):1815-1820
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  • 收稿日期:  2012-02-17
  • 刊出日期:  2013-06-11
苑士超, 谢水波, 李仕友, 刘金香, 刘迎九, 唐振平. 厌氧活性污泥处理废水中的U(Ⅵ)[J]. 环境工程学报, 2013, 7(6): 2081-2086.
引用本文: 苑士超, 谢水波, 李仕友, 刘金香, 刘迎九, 唐振平. 厌氧活性污泥处理废水中的U(Ⅵ)[J]. 环境工程学报, 2013, 7(6): 2081-2086.
shu
Yuan Shichao, Xie Shuibo, Li Shiyou, Liu Jinxiang, Liu Yingjiu, Tang Zhenping. U(Ⅵ) removal from wastewater by anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2081-2086.
Citation: Yuan Shichao, Xie Shuibo, Li Shiyou, Liu Jinxiang, Liu Yingjiu, Tang Zhenping. U(Ⅵ) removal from wastewater by anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2081-2086.
shu

厌氧活性污泥处理废水中的U(Ⅵ)

  • 1.  南华大学污染控制与资源化技术湖南省重点实验室, 衡阳 421001
  • 2.  南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001
  • 收稿日期:  2012-02-17
基金项目:

国家自然科学基金资助项目(11175081)

湖南省科技计划重点项目(2011SK2015)

湖南省创新平台基金项目(09K076)

摘要: 用人工驯养的厌氧污泥进行除铀实验,探讨了微生物投加量(VSS)、pH值、U(Ⅵ)初始浓度、外加电子供体和污泥重复利用等对污泥处理U(Ⅵ)的影响,并进行了相关机理分析。实验结果表明,在适当的pH范围内(5.2~6.6),厌氧污泥对铀保持较长时间的高效去除率;当以还原铁粉和无水乙醇作电子供体时,U(Ⅵ)去除率保持在95%以上的时间为未加电子供体时的2倍。U(Ⅵ)去除速度与VSS投加量成正比关系,U(Ⅵ)初始浓度对去除效果的影响不大,厌氧污泥可以长期使用。pH值的影响最关键,其次是外加电子供体。厌氧污泥除U(Ⅵ)机理为氧化还原和吸附的共同作用。

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